Notice: Undefined index: debug in /var/www/clients/client21/web40/web/core/print.php on line 86

Fatal error: Uncaught Mpdf\MpdfException: Data has already been sent to output, unable to output PDF file in /var/www/clients/client21/web40/web/vendor/mpdf/mpdf/src/Mpdf.php:9292 Stack trace: #0 /var/www/clients/client21/web40/web/core/print.php(93): Mpdf\Mpdf->Output() #1 /var/www/clients/client21/web40/web/index.php(117): generate_print('<figure class="...', Array) #2 {main} thrown in /var/www/clients/client21/web40/web/vendor/mpdf/mpdf/src/Mpdf.php on line 9292